Any way to publish packages that are *always* unlisted?

I have several packages that by themselves are useless -- they merely are present to act as dependencies of other packages so that I have a "package per assembly" to avoid packages overlapping each others' dll's. However when folks look at
the list of packages they're overwhelmed and can't choose which one they want. The story would be much improved if all these intermediate packages were hidden -- only available as dependencies.

I believe right now when you publish a package, by default it's listed. Then you need to go to nuget.org to unlist it. But I think it's a good feature to allow publishing a package and having it unlisted by default.